I would not rely on Zillow especially for pricing. If you want details on a property just list it here and you will get help.
This was not a trustee sale. The sales price was indeed listed at 390k on the tax roll and I do not see any recording of a mortgage so it looks like a cash deal. Also the name of the seller is not the same as the last name on the living trust. That may or may not be meaningful. I agree it does not correlate at all with the sales statistics. I took a quick quick look to see if the property was entered as a sold on the MLS and I don’t see it so it may be a sale between friends or relatives or something of that nature.